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Date: Tue, 30 Aug 2022 20:59:38 +0800 From: kernel test robot <lkp@...el.com> To: Xi Ruoyao <xry111@...111.site>, loongarch@...ts.linux.dev Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org, WANG Xuerui <kernel@...0n.name>, Huacai Chen <chenhuacai@...nel.org>, Youling Tang <tangyouling@...ngson.cn>, Jinyang He <hejinyang@...ngson.cn>, Xi Ruoyao <xry111@...111.site> Subject: Re: [PATCH v7 4/5] LoongArch: Support PC-relative relocations in modules Hi Xi, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on kees/for-next/execve] [also build test WARNING on linus/master v6.0-rc3 next-20220830] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Xi-Ruoyao/LoongArch-Support-toolchain-with-new-relocation-types/20220830-185350 base: https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/execve config: loongarch-allyesconfig (https://download.01.org/0day-ci/archive/20220830/202208302041.ANqQ0hQd-lkp@intel.com/config) compiler: loongarch64-linux-gcc (GCC) 12.1.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/intel-lab-lkp/linux/commit/529c0f36d2dad7dd4bcec3815f821547d9e9643c git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Xi-Ruoyao/LoongArch-Support-toolchain-with-new-relocation-types/20220830-185350 git checkout 529c0f36d2dad7dd4bcec3815f821547d9e9643c # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch SHELL=/bin/bash arch/loongarch/kernel/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@...el.com> All warnings (new ones prefixed by >>): 366 | [R_LARCH_NONE] = apply_r_larch_none, | ^~~~~~~~~~~~~~~~~~ arch/loongarch/kernel/module.c:366:64: note: (near initialization for 'reloc_rela_handlers[0]') arch/loongarch/kernel/module.c:367:64: warning: initialized field overwritten [-Woverride-init] 367 | [R_LARCH_32] = apply_r_larch_32, | ^~~~~~~~~~~~~~~~ arch/loongarch/kernel/module.c:367:64: note: (near initialization for 'reloc_rela_handlers[1]') arch/loongarch/kernel/module.c:368:64: warning: initialized field overwritten [-Woverride-init] 368 | [R_LARCH_64] = apply_r_larch_64, | ^~~~~~~~~~~~~~~~ arch/loongarch/kernel/module.c:368:64: note: (near initialization for 'reloc_rela_handlers[2]') arch/loongarch/kernel/module.c:369:64: warning: initialized field overwritten [-Woverride-init] 369 | [R_LARCH_MARK_LA] = apply_r_larch_none, | ^~~~~~~~~~~~~~~~~~ arch/loongarch/kernel/module.c:369:64: note: (near initialization for 'reloc_rela_handlers[20]') arch/loongarch/kernel/module.c:370:64: warning: initialized field overwritten [-Woverride-init] 370 | [R_LARCH_MARK_PCREL] = apply_r_larch_none, | ^~~~~~~~~~~~~~~~~~ arch/loongarch/kernel/module.c:370:64: note: (near initialization for 'reloc_rela_handlers[21]') arch/loongarch/kernel/module.c:371:64: warning: initialized field overwritten [-Woverride-init] 371 | [R_LARCH_SOP_PUSH_PCREL] = apply_r_larch_sop_push_pcrel, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/loongarch/kernel/module.c:371:64: note: (near initialization for 'reloc_rela_handlers[22]') arch/loongarch/kernel/module.c:372:64: warning: initialized field overwritten [-Woverride-init] 372 | [R_LARCH_SOP_PUSH_ABSOLUTE] = apply_r_larch_sop_push_absolute, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/loongarch/kernel/module.c:372:64: note: (near initialization for 'reloc_rela_handlers[23]') arch/loongarch/kernel/module.c:373:64: warning: initialized field overwritten [-Woverride-init] 373 | [R_LARCH_SOP_PUSH_DUP] = apply_r_larch_sop_push_dup, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/loongarch/kernel/module.c:373:64: note: (near initialization for 'reloc_rela_handlers[24]') arch/loongarch/kernel/module.c:374:64: warning: initialized field overwritten [-Woverride-init] 374 | [R_LARCH_SOP_PUSH_PLT_PCREL] = apply_r_larch_sop_push_plt_pcrel, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/loongarch/kernel/module.c:374:64: note: (near initialization for 'reloc_rela_handlers[29]') arch/loongarch/kernel/module.c:375:64: warning: initialized field overwritten [-Woverride-init] 375 | [R_LARCH_SOP_SUB ... R_LARCH_SOP_IF_ELSE] = apply_r_larch_sop, | ^~~~~~~~~~~~~~~~~ arch/loongarch/kernel/module.c:375:64: note: (near initialization for 'reloc_rela_handlers[32]') arch/loongarch/kernel/module.c:375:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:375:64: note: (near initialization for 'reloc_rela_handlers[33]') arch/loongarch/kernel/module.c:375:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:375:64: note: (near initialization for 'reloc_rela_handlers[34]') arch/loongarch/kernel/module.c:375:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:375:64: note: (near initialization for 'reloc_rela_handlers[35]') arch/loongarch/kernel/module.c:375:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:375:64: note: (near initialization for 'reloc_rela_handlers[36]') arch/loongarch/kernel/module.c:375:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:375:64: note: (near initialization for 'reloc_rela_handlers[37]') arch/loongarch/kernel/module.c:376:64: warning: initialized field overwritten [-Woverride-init] 376 | [R_LARCH_SOP_POP_32_S_10_5 ... R_LARCH_SOP_POP_32_U] = apply_r_larch_sop_imm_field, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/loongarch/kernel/module.c:376:64: note: (near initialization for 'reloc_rela_handlers[38]') arch/loongarch/kernel/module.c:376:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:376:64: note: (near initialization for 'reloc_rela_handlers[39]') arch/loongarch/kernel/module.c:376:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:376:64: note: (near initialization for 'reloc_rela_handlers[40]') arch/loongarch/kernel/module.c:376:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:376:64: note: (near initialization for 'reloc_rela_handlers[41]') arch/loongarch/kernel/module.c:376:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:376:64: note: (near initialization for 'reloc_rela_handlers[42]') arch/loongarch/kernel/module.c:376:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:376:64: note: (near initialization for 'reloc_rela_handlers[43]') arch/loongarch/kernel/module.c:376:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:376:64: note: (near initialization for 'reloc_rela_handlers[44]') arch/loongarch/kernel/module.c:376:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:376:64: note: (near initialization for 'reloc_rela_handlers[45]') arch/loongarch/kernel/module.c:376:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:376:64: note: (near initialization for 'reloc_rela_handlers[46]') arch/loongarch/kernel/module.c:377:64: warning: initialized field overwritten [-Woverride-init] 377 | [R_LARCH_ADD32 ... R_LARCH_SUB64] = apply_r_larch_add_sub, | ^~~~~~~~~~~~~~~~~~~~~ arch/loongarch/kernel/module.c:377:64: note: (near initialization for 'reloc_rela_handlers[50]') arch/loongarch/kernel/module.c:377:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:377:64: note: (near initialization for 'reloc_rela_handlers[51]') arch/loongarch/kernel/module.c:377:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:377:64: note: (near initialization for 'reloc_rela_handlers[52]') arch/loongarch/kernel/module.c:377:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:377:64: note: (near initialization for 'reloc_rela_handlers[53]') arch/loongarch/kernel/module.c:377:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:377:64: note: (near initialization for 'reloc_rela_handlers[54]') arch/loongarch/kernel/module.c:377:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:377:64: note: (near initialization for 'reloc_rela_handlers[55]') arch/loongarch/kernel/module.c:377:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:377:64: note: (near initialization for 'reloc_rela_handlers[56]') arch/loongarch/kernel/module.c:378:64: warning: initialized field overwritten [-Woverride-init] 378 | [R_LARCH_B26] = apply_r_larch_b26, | ^~~~~~~~~~~~~~~~~ arch/loongarch/kernel/module.c:378:64: note: (near initialization for 'reloc_rela_handlers[66]') arch/loongarch/kernel/module.c:379:64: warning: initialized field overwritten [-Woverride-init] 379 | [R_LARCH_PCALA_HI20...R_LARCH_PCALA64_HI12] = apply_r_larch_pcala, | ^~~~~~~~~~~~~~~~~~~ arch/loongarch/kernel/module.c:379:64: note: (near initialization for 'reloc_rela_handlers[71]') arch/loongarch/kernel/module.c:379:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:379:64: note: (near initialization for 'reloc_rela_handlers[72]') arch/loongarch/kernel/module.c:379:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:379:64: note: (near initialization for 'reloc_rela_handlers[73]') arch/loongarch/kernel/module.c:379:64: warning: initialized field overwritten [-Woverride-init] arch/loongarch/kernel/module.c:379:64: note: (near initialization for 'reloc_rela_handlers[74]') arch/loongarch/kernel/module.c: In function 'apply_r_larch_pcala': >> arch/loongarch/kernel/module.c:336:19: warning: this statement may fall through [-Wimplicit-fallthrough=] 336 | v = offset_rem >> 52; | ~~^~~~~~~~~~~~~~~~~~ arch/loongarch/kernel/module.c:338:9: note: here 338 | case R_LARCH_PCALA_LO12: | ^~~~ vim +336 arch/loongarch/kernel/module.c 315 316 static int apply_r_larch_pcala(struct module *mod, u32 *location, Elf_Addr v, 317 s64 *rela_stack, size_t *rela_stack_top, unsigned int type) 318 { 319 union loongarch_instruction *insn = (union loongarch_instruction *)location; 320 /* Use s32 for a sign-extension deliberately. */ 321 s32 offset_hi20 = (void *)((v + 0x800) & ~0xfff) - 322 (void *)((Elf_Addr)location & ~0xfff); 323 Elf_Addr anchor = (((Elf_Addr)location) & ~0xfff) + offset_hi20; 324 ptrdiff_t offset_rem = (void *)v - (void *)anchor; 325 326 switch (type) { 327 case R_LARCH_PCALA_HI20: 328 v = offset_hi20 >> 12; 329 insn->reg1i20_format.immediate = v & 0xfffff; 330 break; 331 case R_LARCH_PCALA64_LO20: 332 v = offset_rem >> 32; 333 insn->reg1i20_format.immediate = v & 0xfffff; 334 break; 335 case R_LARCH_PCALA64_HI12: > 336 v = offset_rem >> 52; 337 /* fall through */ 338 case R_LARCH_PCALA_LO12: 339 insn->reg2i12_format.immediate = v & 0xfff; 340 break; 341 default: 342 pr_err("%s: Unsupport relocation type %u\n", mod->name, type); 343 return -EINVAL; 344 } 345 346 return 0; 347 } 348 -- 0-DAY CI Kernel Test Service https://01.org/lkp
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